Main Title |
Development of a Pilot Plant to Demonstrate Removal of Carbonaceous, Nitrogenous and Phosphorus Materials From Anaerobic Digester Supernatant and Related Process Streams. |
Author |
Bennet, George E. ;
|
CORP Author |
FMC Corp., Santa Clara, Calif. Central Engineering Labs. |
Year Published |
1970 |
Report Number |
FWQA-14-12-414; OWRR-17070-FKA; 03453,; 17070-FKA-05/70 |
Stock Number |
PB-196 733 |
Additional Subjects |
( Water pollution ;
Phosphates) ;
( Sewage treatment ;
Phosphates) ;
( Nitrogen inorganic compounds ;
Sewage treatment) ;
( Packaged sewage plants ;
Mobile equipment) ;
Pilot plants ;
Digesters ;
Nutrients ;
Chemical removal(Sewage treatment) ;
Calcium oxides ;
Precipitation(Chemistry) ;
Ammonia ;
Cost estimates ;
Secondary sewage treatment
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-196 733 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
82p |
Abstract |
Digester supernatant contains high concentrations of nitrogen and phosphorus. Also, poor quality supernatant discharged from an anaerobic digester can have an adverse effect on the overall efficiency of a wastewater treatment plant. The report discusses the building and demonstrating of a unique, trailer-mounted, and completely self-contained pilot plant. The pilot plant is designed to investigate the improvement of digester supernatant quality, with particular emphasis on the removal of nitrogen and phosphorus. The pilot plant treatment sequence consists of carbon dioxide removal via air-stripping, lime precipitation of phosphorus and carbonaceous particulate matter, and removal of nitrogen by packed-tower ammonia-stripping. The pilot plant was operated over a two-month period at a trickling filter plant where two-stage anaerobic digestion is practiced. It was found that 80-95% of supernatant phosphorus could be removed at a lime dosage equal to 50 pounds of hydrated lime per pound of phosphorus removed. Average ammonia-nitrogen removal was 82%, achieved at an air flow rate equal to 83,000 cubic feet of air per pound of NH3-N removed. Normal lime precipitation removed about one-half of the supernatant TOC, COD, AND Organic Nitrogen. The average decrease in suspended solids was 64%. (Author) |
Supplementary Notes |
Paper copy available from Superintendent of Documents, GPO, Washington, D. C. 20402, as I67.13/4:17010 FKA-05/70. $1.00. |
PUB Date Free Form |
May 70, |
Category Codes |
13B; 68D |
NTIS Prices |
MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326515418 |
Origin |
NTIS |
Type |
CAT |